Zhone IMACS 8000, Руководство пользователя

Страница: 441 / 788

Data Cards 14-21
HSU Card HSU Card User Screens and Settings
Table 14-7. Test Screen Option Settings and Defaults
Notes:
1. The following BERT settings are available only on the four-port HSU 530/35 Card:
ds0, ff, 7e, 32, 40, ocu-a, dsu-a, csul-a, and csu2a. These settings are not available on
the HSU-T V11 and HSU-T 35 Cards.
BERT
The Bit Error Rate Tester (BERT) sends a data pattern and measures the bit error rate (BER)
on the selected HSU port. The patterns that can be selected are off, mark (1111), space (0000),
1:1 (1010 alternating), 1:7 (0100-0000), 511 (511 test pattern), qrss (quasi-random signal
source), and 2047 (2047 test pattern).
On the four-port HSU 530/35 Card, selecting the ds0 pattern will display another set of BERT
patterns. Additional non-latching loopback patterns are ff (1111-1111), 7e (0111-1110), 32
(0011-0010), 40 (0100-0000), ocu-a (ocu-alternating byte), csu-a (csu-alternating byte),
dsu-a (dsu-alternating byte), csu1a (csu–one repeater–alternating byte), and csu2a (csu–two
repeater–alternating byte). The results of the alternating patterns (ocu-a, csu-a, dsu-a, csu1a
and csu2a) appear in the Test Screen.
Also note that the Bit Error Rate Tester is supported on the HSU-T V11 and HSU-T 35 Cards
only if the port mode is set to dce in their Card Main Screens.
Parameter User Options Notes Default
BERT off mark space 1:1 1:7 511 qrss
2047 ds0 ff 7e 32 40 ocu-a csu-a
dsu-a csu1a csu2a 1 off
CTS norm off on norm
RLSD norm off on norm
DSR norm off on norm
SYNC information only–no user options
BE information only–no user options
ES information only–no user options
SES information only–no user options
OSS information only–no user options
BER information only–no user options
ELAP information only–no user options
RTS information only–no user options
DTR information only–no user options
LB ST information only–no user options